Heat-recovering air-control device for furnaces



March 24,1925.

O. S. BOWMAN HEAT. RECOVERING AIR CONTROL DEVICE FOR FURNACES Filed Nr. 7, 1922 ANI. .GMM

Patented Mar. 2.4, 1925.

oLIVEns. BOWMAN, OF COLORADO SPRINGS, COLORADO.

` HEAT-RECOVERING AIR-CONTROL DEVICE 'Fon FURNACES.

. Application mednovember 7, ieee. Serial No; 599,538.

\ To al? whom t may concer/n:

Beit known that I, OLIVER S. BOWMAN, a citizen ofthe United Sta-tes, and a `resident of Colorado Springs, -in the .county of El Paso and State of Colorado, have invented a new and useful Heat-Recovering Air-Control Device for Furnaces, of which the followingis a specification.

My invent-'on relates to .heat recovering air control devices for furnaces, and has forits object the provision of a device of; this class which will control the air movements incident to ventilation so that a part of the foulair from near the ceiling `Will Ibe used` to maintain combustion, and heat Willbe re covered from the remainder of the foul `air and fromthe smoke. Other objects will appear as the description progresses. p

Figure 1,is a plan View ofthe invention; Fig. 2, a vertical longitudinall section on? the line A--A in Fig. 1, and Fig. 3, a vertical transverse section onthe lines B-LB in Figs. 1and2. Y

I do not 'confines myself tov the precise formas herein shown, but Ait is understood that variouschanges inthe details of con` struction may bemade `Within the scope of the claims. Y i .p

The reference character 1 denotes a casing,

having chambers 2 and 3 therein, l, a vertically movable partition dividing chamber 2 intoy an upper and a lower compartment; 5, a smoke conduit in open communication with the smoke chamber of a furnace F and With the lower compartment of chamber l2; 6van exhaust conduit, having a fan 7 therein,'in`

open communication With chamber 3; 8,*a

fresh air conduit connected to one sideof casing l; 9, a pipe connected to the opposite Side of casing l; 13, a plurality of channels, having end Walls 13a,in open communica` tion with fresh air conduit 8 and pipe 9,14, and 14, a plurality of channels inopen communication withchambers 2 and 3; 15, a foul air conduit, having a damper 16 therein, in open communication with the upper compartment of chamber 2; and 17, 'a draft conduit', havingdampers 18 and2l'therein,

in open communication With the combustion chamber of a furnace and with foul air conduit 15.

FoulA air from near the ceiling 26;(indicated by X-arrows) i'sd'ra'vvn downward through pipe 15, apart of which passes into and downward through conduit 17 into fur-l i nace F beneath grate28,ithence into combustionichamber 29. The smoke,` (indicatedi by Ofarrows) passes through conduit 5 into the lower compartmentiof chamberl 2, thence through channels 14a i into chamber f3, through conduit 6,' and out through chimney flue L25. Theremainder ofsaill foul air passesfr-'om pipe 15 into the uppercompartment of chamber 2, thenceithroughy channels 14 into chamber 3, and through conduit 6, into chimney flue 25.` Fan .7 provides an in` duced draft.

`Fresh air' enters vial conduit 8, (extending through Wall2?) passes through ohannelslinto pipe9,

and from thencey directly into the room. The incoming cool air, flow ing througlrohannels 13, absorbs heat from'f the outgoing Warm foul airan d from the hot gases of combustion, flowing throughchannels llt'and 14?, respectively-- c y All thev foul air may be divertedthrough the upper compartment of chamber 2, by closingk damper 18, or through draftV conduit 17,V by

closing damper 16.7 `f [lhe number of chan-` nels for the passage of lfoulair may be decreased and the number for the passage of ing partition i 4. Y

the gases of Vcombustion increased, by rais- 7Vhen my invention is used With ,la furnace, the usual draft openings'are` closed'. i

eoV c' and the air for the maintenance of combus-v -i tion mayfeither be drawn from near the ceiling 26, as described, or admitted directly through cfondvuitil?,

and opening damper 21.

Access maybe had to channels "14 and 14 by? removingcap 22.

vl claim l 1. .In a `device of the class described inf, cludmg incombmation, a casing, having a lchamber in each end thereof;

a fresh air by closingdainper 1'8"' i intake conduitjconnectedv` to said casing;`

alpipe connected to said housing; a

rality of channels disposedwvithin said casj i ing, each alternate channel i'n openfoommunication with said fresh air intake conduit and said' pipe, andtheremainder With, said chambers, `and a foul air conduit in lopen communication with said casing; purposes set forth,v Y

2. In a device of the class described, in cludinglin combination, a casing, having a chamber" in each end thereof; a fresh air intake conduit connected to said casing; a plurality of rectangular channels disposed Within said" casing, each alternate channel for the in open communication with said freshair nication with said yfoul air conduit and adapted to communicate Withy the combustion chamber of a furnace; for the purposes set forth.

y 3. In av device of the class described,.in cluding in combination, avcasing, lhaving a chamber in each end thereof; a movable partition, dividing one of said chaml bers into Vtwo compartments; a fresh -air intake conduit connected to said'casing; a plurality of channels disposedWithin said casing, `each.alternatechannel in open conimuiiication With said fresh air intake con# duit and said pipe and the remaining vchannels in open communication ywith said chambers; a foul, air conduit in open communication With ,said casing, and a draft conduit in open communication With said foul air conduit and adaptedv to communicate with the combustion chamber of a furnace; for the purposes set forth. v

4. ln a device of the class described, in-

` cluding in combination; ai casing, having a chamber at each end thereof; a movable partition in one-ofsaid chambers,dividing it into tWo compartments; a fresh air intake conduit connected to said casing; a pipe connected to said casing; a Vplurality Vof channels vdisposed Within said casing, each alternate channel in open communication with said fresh air intake conduit and said pipe, and lthe remaining channels in open communication with saidv chambers; a foul air conduit in open communication with one compartment of said divided chamber, and a draft conduit in communication with said foul air conduit, yand adapted tocominunicate with the combustion chamber ofy a furnace; for the purposes set forth.-

5. In a device of the classdescribed, including in combination, a casing, having a chamber at each end thereof;- a .foul air conduit in open communication.With'one of lsaid chambers; an exhaust vconduit in open communication with the other chamber; a fresh air` intake conduit connected to vsaid casing; a pipe connected toy said housing; a plurality of channels disposed Within said casing, each alternate channel in openconimunication with said fresh air intake con duit and said pipe, and the remaining channels in open communication with said chambers, and a draft conduit in open communication with said foul air conduit, and

adapted to communicate with the combus-` tion chamber of a furnace; for the purposes duit and said pipe, and the remainingchan set forth. v

6. In a deviceof the class described, iiicluding iny combination, a casing, having a chamber rtit-,each end thereof, one of which isr divided; a foul air conduit 'in open communication With-one compartment of said divided chamber; an exhaust conduit in open communication vrWiththe other chamber; a fresh air intake conduit .connected tosaid casing;, a pipe connected to said casing; a plurality of channels disposed Within said casing, each alternate channel in open communication with said fresh airintake conduit and said pipe, andthe re-` mainingl channels ii'i open communication with said chambers, and a draft conduit in open 'communication with said foul air.

conduit, andadapted to communicate with the combustion chamber of a furnace; for the' purposes set forth.

7. In a device of theclass described, in,- cluding in combination, a casing, having a chamber in each end thereof, one of which is divided; afreshair intake conduit con-.

cate with the combustion chamber of a fur-` nace; lfor the purposes set forth. v

8. In a device ofthe class described,iin-

cluding in combination, a casing, having al chamber injeacliend thereof; a fresh air intake conduit connected to said casing; a pipe connected to saidcasing; a-plurality of channels disposed within saidy casing, each alternate channel in opencommunication with said fresh air intake conduit and:

said pipe, and thereniaining channels in open communication with said chambers;

`and an exhaust conduit in communication with` one of said chambers; a 4foul aircoiif duit in LcommunicationWith the-other chainber, and a draft conduit in open communi-y cation With said foulair conduit, and adapted to communicate with the combustion chamber of a furnace; for'the purposes set forth. f 1

9. 'In a device of the class described, including in combination; a.casinghaving a chamber at eachend thereof; a movable partition, dividing one' of said chambers into two compartments; a fresh airintake conduit connected to said housing; a pipe -connected to said housing; a plurality of rectangular channels disposed Within said cas-f ing, each alternate channel in open communication with said fresh air intake connels in-open communication With said cham-v bers; a foul air conduit, having a damper v13() therein, in open communication AWith one compartment of said divided chamber, and a draft conduit, having a damper therein, in open communication with said foul air conduit, and adapted to communicate with the combustion chamber of a furnace; for the purposes set forth.

10. In a device of the class described, inf cluding in combination, a casing, having a chamber at each end thereof; a fresh air intake conduit connected to said casing; a pipe connected to said casing; a plurality of rectangular channels disposed Within said casing, each alternate channel in open communication with said fresh air intake conduit and said pipe, and the remaining channels in open communication with said chambers; a foul air conduit, having a damper therein, in open communication with one of said chambers; and a draft conduit, having a damper therein, iii open communication with said foulair conduit, and adapted to communicate With the combustion chamber of a furnace; for the purposes set forth.

1l. In a device of the class described, including in combination, a casing, having a chamber in each end thereof; a movable partition Within one of said chambers dividing it into tivo compartments; a foul air conduit,v

having a damper therein, in open communication With one compartment of said divided chamber; a draft circuit, having a damper therein, in open communication With said foul airconduit, and adapted to communicate With the combustion chamber of a furnace; an exhaust conduit, having a fan therein, in open communication With the other chamber in said housing; a fresh air conduit connected to said casing; a pipe connected to said casing; a plurality of rectangular channels disposed Within said housing, each alternate channel in open com,- munication with said fresh air conduit and said pipe, and the remaining` channels in open communication with said chambers; -for the purposes set forth.

l2, In a device of the class described, including in combination, a casing having a chamber in each end thereof; a' foul air conduit, having a damper therein, in open communication with one of said chambers; a draft conduit, having a damper therein, in open communication with said foul air conduit, and adapted to communicate is divided `with said chambers; forivith the combustion chamber of a furnace;v

. nected to said casing, and a plurality of rectangular channels disposed Within said hous-v ing, each alternate channel in open communication with said fresh air conduit and said pipe, and the remaining channels in open communication with said chambers; for the purposes set forth.

13, In a device of the class described, in# cluding in combination, a casing, having a chamber in each-end thereof, one of which a foul air conduit, having va damper therein, in open communication with one `compartment o-f said divided chamber; v

a dra-ft conduit, having a damper therein, in open communication With said foul air conn duit, and adapted to communicate with the combustion chamber of a furnace; a fresh air intake conduit connected to said casing; a pipe connected to said casing; and a plurality of rectangular channels disposed f within said casing, each alternate channel in open communication with said fresh air intake conduit and said pipe, and the remaining channels in open communication with said chambers; for the purposes set forth.A

14. In a device of the class described, including in combination, a casing having a removable cap on one end thereof and a chamber in each end thereof, one of which is divided; a foul air conduit, having a damper therein, in open communication With one compartment of said divided chamber; a draft conduit, having ya dampertherein, in open Comunication with said foul air con-. duit, and adapted to communicate With the combustion chamber of'` a furnace; an eX- haust conduit, having a fany therein, in open communication With the other chamber in said casing; a fresh air conduit connected to said housing; a pipe connected to said casing, anda plurality of rectangular channels disposed Within said casing, each alternate channel in open communication With said fresh air conduit and said pipe, and the remaining channels in open communication the purposes set forth.

OLIVER S. BO'WMAN. 

